Sonomagnetic field characterisation from induced, radial current waves

Author

Peddell, J.B. ; Leach, P.D. ; Ramirez, J.A. ; Freeman, E.M.

Author_Institution

Dept. of Electr. & Electron. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK

Volume

32

Issue

3

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

1022

Lastpage

1025

Abstract

Magnetic fields can be produced by acoustic motions in electrically conducting media, such as sea water. A novel technique is presented to characterise the sonomagnetic field, produced by circular current rings, induced in the ocean by cylindrically symmetric pressure waves. Both acoustic and magnetic field problems are solved using the finite element (FE) method. An axisymmetric problem consisting of a monopole source submerged in the ocean is discussed. Spatial magnetic field plots are obtained enabling sonomagnetic field characterisation

Keywords

electromagnetic induction; finite element analysis; geomagnetism; magnetic fields; marine systems; ocean waves; oceanography; underwater sound; acoustic motions; axisymmetric problem; circular current rings; cylindrically symmetric pressure waves; electrically conducting media; finite element method; induced radial current waves; monopole source; sea water; sonomagnetic field characterisation; Acoustic propagation; Finite element methods; Iron; Magnetic analysis; Magnetic fields; Magnetic separation; Magnetohydrodynamics; Magnetostatic waves; Maxwell equations; Oceans; Underwater acoustics;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.497414

Filename

497414